Merged in changes from @chbeer, fixes #28.
Updated to the latest DropboxSDK and added Mac-specific files to the Mac project.
Updated the sample Notebook projects to work with the latest changes to the framework and removed all the old sample projects that were falling by the wayside.
Cleared out some iOS file references from the Mac project.
Remove the iOS platform target restriction from the DropboxBased sync classes.
Put in platform checks to import the proper Dropbox header.
Fix an incorrect platform-specific @class declaration.
Project updates to support the latest Dropbox SDK
Check for nil when doing equality testing and make sure not to insert nil into the dictionary.
Remove a deleted file reference.
Fix an incorrect delegate callback method signature for the DBRestClient copy file request.
Check for nil before attempting to insert the objectSyncID into a dictionary.
Merge branch 'develop' of github.com:nothirst/TICoreDataSync into develop
Inserted a check to make sure that a sync object responds to a selector before asking it to perform said selector.

Conflicts:
	TICoreDataSync/02 Primary Classes/Generic Operations/TICDSSynchronizationOperation.m
Revert "Inserted a check to make sure that a sync object responds to a selector before asking it to perform said selector."

This reverts commit 6e309b0710f9306e5135ae5aec95297d59c4ca8b.
Check for nil when doing equality testing and make sure not to insert nil into the dictionary.
Fix an incorrect delegate callback method signature for the DBRestClient copy file request.
Updated to the latest DropboxSDK
Merge branch 'develop' of github.com:nothirst/TICoreDataSync into feature/dropboxsdk

Conflicts:
	TICoreDataSync-iOS.xcodeproj/project.pbxproj
	TICoreDataSync/02 Primary Classes/DropboxSDK-Based Sync/Operations/TICDSDropboxSDKBasedDocumentClientDeletionOperation.m
	TICoreDataSync/02 Primary Classes/DropboxSDK-Based Sync/Operations/TICDSDropboxSDKBasedDocumentDeletionOperation.m
	TICoreDataSync/02 Primary Classes/DropboxSDK-Based Sync/Operations/TICDSDropboxSDKBasedDocumentRegistrationOperation.m
	TICoreDataSync/02 Primary Classes/DropboxSDK-Based Sync/Operations/TICDSDropboxSDKBasedWholeStoreUploadOperation.m
Merge branch 'feature/dropboxsdk' into develop
The Dropbox-based managers and operations are now compatible with Dropbox's Mac SDK.